Upon sneaking downstairs, they find a neighbour's cat, Ginger, standing outside in a tailcoat and top hat, looking at his wristwatch.
Sophie and Nick crawl out the house through the catflap and approach Ginger, who suddenly speaks to them in English and inquires whether they knew 'the deceased'.
By chance, he was introduced to rock and roll after accidentally turning on a vinyl player and speakers in the living room, and secretly practised singing in the garden shed.
After being 'found' by Sophie and Nick's parents and adopted as a pet, Kenneth introduced himself to Fred (who initially tried to eat him) and offered to be his manager.
When the backyards were no longer enough for Fred's audience, they both left the family to go on a world tour, with Sophie and Nick desperately searching the streets to find their missing pets.
When dawn falls, everyone disappears and Sophie and Nick are also sent to bed by Kenneth, who laboriously cleans the kitchen before retiring upstairs himself.
The next morning, Sophie and Nick's parents are left confused by the previously-filled refrigerator being suddenly empty, along with all the flowers from the garden plants missing.
Leading them down the garden, the children reveal Fred's still-decorated headstone to their amazed and delighted parents, who assume they made it themselves.